作业帮在硫酸镍为电解质的原电池中,在正极发生的反应式Under standard-state conditions,which of the following half-reactions occurs at the cathode during the electrolysis of aqueous nickel sulfate at 25C?A.2H2O --> O2 + 4H+ + 4e- B.Ni2+ +
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在硫酸镍为电解质的原电池中,在正极发生的反应式Under standard-state conditions,which of the following half-reactions occurs at the cathode during the electrolysis of aqueous nickel sulfate at 25C?A.2H2O --> O2 + 4H+ + 4e- B.Ni2+ +
在硫酸镍为电解质的原电池中,在正极发生的反应式
Under standard-state conditions,which of the following half-reactions occurs at the cathode during the electrolysis of aqueous nickel sulfate at 25C?
A.2H2O --> O2 + 4H+ + 4e- B.Ni2+ + 2e- --> Ni
C.2H2O + 2e- --> H2 + 2OH-
D.Ni --> Ni2+ + 2e-
在硫酸镍为电解质的原电池中,在正极发生的反应式Under standard-state conditions,which of the following half-reactions occurs at the cathode during the electrolysis of aqueous nickel sulfate at 25C?A.2H2O --> O2 + 4H+ + 4e- B.Ni2+ +
which of the following half-reactions occurs at the cathode
阴极半反应：
选B.
因为镍离子正电荷受到阴极吸引,并且阴极给电子,那么Ni2+就会得到电子智能产生镍单质.